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Finding the Fourth Proportional to 139,467.83, 192,466.86 and 75,805.76

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Solution

The fourth proportional to 139,467.83, 192,466.86 and 75,805.76 is: 104,612.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,467.83 : 192,466.86 = 75,805.76 : x
  2. Step 2: Convert to fraction form
    139,467.83/192,466.86 = 75,805.76/x
  3. Step 3: Cross multiply
    139,467.83x = 192,466.86 × 75,805.76
  4. Step 4: Simplify right side
    139,467.83x = 14,590,096,597.11
  5. Step 5: Solve for x
    x = 14,590,096,597.11/139,467.83
  6. Step 6: Final answer
    x = 104,612.63

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.